Improvement in planing-maohines



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TO ALL WHOM IT MAY CON CERN:

. Be it known that I, BENAIAH FITTS, of Newark, State of New Jersey, have invented a. new and useful Improvement in Cylinder Flaming-Machines; and I do hereby declare thatthe following is av full, clear, and exact description of the construction and operation of the same, reference being'had to the annexed drawings, making a part of this specification, in which- Figure is an elevation of the machine.

Figure 2 is a plan, showing a section of the gea'rs through :r y, fig. 1.

The invention relates to certain improvements in the gearing that drives the feed-rolls in machine for planing boards.

The construction is as follows: `a is a frame that supports the other parts of the machine; Z1 is the cuttingcylinder; c is the upper feed-roll; d is the lower feed-roll; e is an external gear on lower feed-roll; f is an internal gear on upper feed-roll. It should be made with the side towards the cutting-cylinder closed up, or in disk f orm, to keep the shavings from filling up the teeth. g is a gear, running in gear e, and to which power is applied to drive the feed-rolls. 7L is a small gear, running in gear f and gear e, connecting the upper to the lower roll, and by which upper and lower rolls are connected together, and are driven in the direction of the arrows. z'is an arm, one end of which is fitted to and held by lower roll-shaft, the other end holding the shaft on whichgear L rotates. s is an arm, one end of which is tted to and heldtby the upper roll-shaft, the end of which projectsfar enough through gear f to receive it, the. other end holding in position the shaft on which gear z, rotates. r is a screw that raises and lowers or holds in Aplace the upper roll c.

The operation is as follows: In planing boards of different thicknesses, the upper roll c is raised and lowered', to correspond with the thickness of the board, carrying with it gear f; but it will be seen that gear h, being held in position by arms z' and s, holds the same relation or relative position to gearsf and e at one point that it does at another, thus driving the upper roll whateverv distance the rolls e and (l may be apart.

I am aware that connecting together of feed-rolls hy means of a small gear held in its position by two arrns, one connecting the gear-shaft to the upper, the other to the lower roll-shaft, and running in an internal and external gear made fast to the roll-shaft, is not new. Letters Patent were granted me, BENAIAH FITTS, then of Worcester, Massachusetts, in 1857, in which such an arrangement was the peculiar feature; and this invention consists in certain improvements carrying out and perfecting the same. It will he seen that there is one gear less, thus making it more simple. In that, the open side of the internal gear is towards the cutting-cylinder, thus allowing the shavings to fill up the teeth of the gear, and causing much injury. With this, the open side of the internal gear is from the cutting-cylinder, the disk towards it, thus preventing its becominglled with shavings.. l

Having set forth the construction'and operation of my invention, what I claim as'ncw, and desire to secure by Letters Patent, isl The arms s and z', when constructed to support the gear-wheel 71 and arranged to operate with wheels e and f, substantially in the mannerrnd for the purposes described. BENAIAH FITTS.

Witnesses:

CHARLES C. REDMOND, C. HALSEY CANFIELD. 

